17420542 has 4 divisors (see below), whose sum is σ = 26130816. Its totient is φ = 8710270.

The previous prime is 17420539. The next prime is 17420567. The reversal of 17420542 is 24502471.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24502471 = 7 ⋅3500353.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4355134 + ... + 4355137.

It is an arithmetic number, because the mean of its divisors is an integer number (6532704).

Almost surely, 2^17420542 is an apocalyptic number.

17420542 is a deficient number, since it is larger than the sum of its proper divisors (8710274).

17420542 is an equidigital number, since it uses as much as digits as its factorization.

17420542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8710273.

The product of its (nonzero) digits is 2240, while the sum is 25.

The square root of 17420542 is about 4173.7922804088. The cubic root of 17420542 is about 259.2311705992.

The spelling of 17420542 in words is "seventeen million, four hundred twenty thousand, five hundred forty-two".